bio 288 ctenophores

ctenes

comb plates - used for movement

comb-like structures

composed of rows of cilia grouped into bands, typically eight longitudinal rows running along the body

apical organ

sensory structure located at the aboral end

rucial role in maintaining the animal's orientation and balance in the water

tantillum

small, thread-like structure that branches off from the main tentacles. These tentilla are used for feeding and are equipped with colloblasts

neural net

diffuse nerve net that coordinates their movements and responses to environmental stimuli.

made up of interconnected nerve cells distributed throughout the body

allows for tasks like locomotion adn responding to sensory inputs

colloblasts

specialized adhesive cells

primarily used for capturing prey.

These cells are primarily located on the tentilla

non-sticking

cydippid larva

The cydippid larva is a developmental stage in the life cycle of many ctenophores,

resembling a miniature version of the adult form but with some differences in morphology and behavior.

have two tentacles with colloblasts

move with their rows of ctenes

24-Isopropylcholesterol

distinctive sterol associated with certain marine organisms,

, when preserved in sedimentary rocks, suggests the presence of specific marine organisms.

sponges secrete it - evidence that sponges most basal based on its presence in the fossil record ?

some evidence ctenophores produce similar compounds